In this post I ask why do songs, movies and books become popular? If you love something, it is easy to think it must be its obvious qualities, but if you work in promotion, you know that these qualities are not easy to
spot. Usually, we look to our peers to discover new things – what Psychologists call social proof. The work I present shows how important social proof is in determining what becomes popular, but also that appeal, to some degree, matters.
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